Patents by Inventor Yuki Minato
Yuki Minato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10283226Abstract: A jet pump measuring pipe repair method that repairs a ruptured part of a measuring pipe horizontally installed to a lower portion of a jet pump provided in reactor water inside a reactor pressure vessel. The repair method includes: fixing a support member to the jet pump near the measuring pipe left remained; mounting, after the support member fixing, a measuring pipe connector provided with a pipe-repairing pipe having both ends over which connecting pipes are fitted, respectively, to the support member; connecting, after the connector mounting, the remaining measuring pipe and connecting pipe using the measuring pipe connector.Type: GrantFiled: January 23, 2013Date of Patent: May 7, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Yuki Minato, Kunihiko Kinugasa, Hajime Mori, Satoshi Yamamoto, Hiroyuki Adachi, Tadahiro Mitsuhashi, Masanobu Watanabe, Yoshinori Katayama, Kozue Matsukawa, Satoshi Miyamura
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Patent number: 9718151Abstract: A reactor measurement-pipe maintenance clamp apparatus includes a first clamp mechanism and a second clamp mechanism. The first clamp mechanism includes clamps to fix the measurement pipe between the clamps, first clamp operation bolts that are allowed to be turned by remote control from above a reactor core, and wedge mechanisms to convert the turning of the clamp operation bolts to displacement of the clamps in a radial direction of the diffuser to generate clamping forces for securing the measurement pipe. The second clamp mechanism includes a support clamp to hold the support, a second clamp operation bolt that is allowed to be turned by remote control from above the reactor core, and a wedge mechanism to convert the turning of the second clamp operation bolt to displacement of the support clamp in a tangential direction of the diffuser to generate clamping force for fixing the support.Type: GrantFiled: July 23, 2014Date of Patent: August 1, 2017Assignee: Kabushiki Kaisha ToshibaInventors: Yusuke Ozawa, Kunihiko Kinugasa, Hajime Mori, Yuki Minato, Masanobu Watanabe, Hiroyuki Adachi, Tadahiro Mitsuhashi
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Patent number: 9371853Abstract: A bolt fixing device is configured so that a lock cap is pushed up by elastic force of an elastic member and engages upper surface teeth with lower surface teeth, the upper surface teeth being formed on the upper surface of a flange of a lock cap, the lower surface teeth being formed on the lower surface of an engagement flange of a body housing. Thus, the head bolt of a jet pump beam is fixed. With the configuration, when installing an inlet mixer, the head bolt of the jet pump beam is simply and reliably locked against rotation.Type: GrantFiled: December 19, 2012Date of Patent: June 21, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Tomoki Fujita, Yuichi Motora, Kiyofumi Saiki, Kunihiko Kinugasa, Yasuhiro Sakai, Haruhiko Hata, Hajime Mori, Yuki Minato, Akira Ito, Kozue Matsukawa
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Patent number: 9312036Abstract: In a jet pump measurement pipe repair method according to the present embodiment, a breakage part of a measurement pipe horizontally fixed to a lower part of a jet pump provided in reactor water in a reactor pressure vessel is repaired. The method has: a step of cutting and removing the measurement pipe including the breakage part; a step of retaining a connection pipe for connecting the remaining measurement pipe on the jet pump by means of a clamp; and a step of connecting ends of the remaining measurement pipe by means of the connection pipe.Type: GrantFiled: December 9, 2011Date of Patent: April 12, 2016Assignee: Kabushiki Kaisha ToshibaInventors: Yuki Minato, Toshihiro Yasuda, Kunihiko Kinugasa, Hajime Mori, Satoshi Yamamoto, Jun Suzuki, Tadahiro Mitsuhashi
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Publication number: 20150016583Abstract: A jet pump measuring pipe repair method that repairs a ruptured part of a measuring pipe horizontally installed to a lower portion of a jet pump provided in reactor water inside a reactor pressure vessel. The repair method includes: fixing a support member to the jet pump near the measuring pipe left remained; mounting, after the support member fixing, a measuring pipe connector provided with a pipe-repairing pipe having both ends over which connecting pipes are fitted, respectively, to the support member; connecting, after the connector mounting, the remaining measuring pipe and connecting pipe using the measuring pipe connector.Type: ApplicationFiled: January 23, 2013Publication date: January 15, 2015Applicant: Kabushiki Kaisha ToshibaInventors: Yuki Minato, Kunihiko Kinugasa, Hajime Mori, Satoshi Yamamoto, Hiroyuki Adachi, Tadahiro Mitsuhashi, Masanobu Watanabe, Yoshinori Katayama, Kozue Matsukawa, Satoshi Miyamura
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Publication number: 20140362967Abstract: A reactor measurement-pipe maintenance clamp apparatus includes a first clamp mechanism and a second clamp mechanism. The first clamp mechanism includes clamps to fix the measurement pipe between the clamps, first clamp operation bolts that are allowed to be turned by remote control from above a reactor core, and wedge mechanisms to convert the turning of the clamp operation bolts to displacement of the clamps in a radial direction of the diffuser to generate clamping forces for securing the measurement pipe. The second clamp mechanism includes a support clamp to hold the support, a second clamp operation bolt that is allowed to be turned by remote control from above the reactor core, and a wedge mechanism to convert the turning of the second clamp operation bolt to displacement of the support clamp in a tangential direction of the diffuser to generate clamping force for fixing the support.Type: ApplicationFiled: July 23, 2014Publication date: December 11, 2014Inventors: Yusuke OZAWA, Kunihiko Kinugasa, Hajime Mori, Yuki Minato, Masanobu Watanabe, Hiroyuki Adachi, Tadahiro Mitsuhashi
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Publication number: 20140321937Abstract: A bolt fixing device is configured so that a lock cap is pushed up by elastic force of an elastic member and engages upper surface teeth with lower surface teeth, the upper surface teeth being formed on the upper surface of a flange of a lock cap, the lower surface teeth being formed on the lower surface of an engagement flange of a body housing. Thus, the head bolt of a jet pump beam is fixed. With the configuration, when installing an inlet mixer, the head bolt of the jet pump beam is simply and reliably locked against rotation.Type: ApplicationFiled: December 19, 2012Publication date: October 30, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tomoki Fujita, Yuichi Motora, Kiyofumi Saiki, Kunihiko Kinugasa, Yasuhiro Sakai, Haruhiko Hata, Hajime Mori, Yuki Minato, Akira Ito, Kozue Matsukawa
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Publication number: 20120144641Abstract: In a jet pump measurement pipe repair method according to the present embodiment, a breakage part of a measurement pipe horizontally fixed to a lower part of a jet pump provided in reactor water in a reactor pressure vessel is repaired. The method has: a step of cutting and removing the measurement pipe including the breakage part; a step of retaining a connection pipe for connecting the remaining measurement pipe on the jet pump by means of a clamp; and a step of connecting ends of the remaining measurement pipe by means of the connection pipe.Type: ApplicationFiled: December 9, 2011Publication date: June 14, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Yuki Minato, Toshihiro Yasuda, Kunihiko Kinugasa, Hajime Mori, Satoshi Yamamoto, Jun Suzuki, Tadahiro Mitsuhashi